oj.uz

답안 #693273

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
693273 2023-02-02T14:33:46 Z vuavisao Paprike (COI18_paprike) C++14
100 / 100
 73 ms 38316 KB 
#include<bits/stdc++.h>
#pragma GCC optimize("O3")
#pragma GCC optimize("unroll-loops")
#define ll long long
using namespace std;

const ll N = 1e6 + 10;

ll n, k;
ll a[N];
vector<ll> g[N];

ll cost[N];
ll res;

void dfs(ll u, ll p) {
    cost[u] = a[u];
    for(const auto& v : g[u]) {
        if(v == p) continue;
        dfs(v, u);
    }
    sort(g[u].begin(), g[u].end(), [&] (ll lhs, ll rhs) -> bool {
        return cost[lhs] < cost[rhs];
    });
    ll need = (ll) g[u].size();
    for(const auto& v : g[u]) {
        if(v == p) {
            -- need;
            continue;
        }
        if(cost[u] + cost[v] <= k) {
            cost[u] += cost[v];
            -- need;
        }
    }
    res += need;
}

int32_t main() {
    ios_base::sync_with_stdio(0);
    cin.tie(0);
    cout.tie(0);
    if (fopen("COI18_PAPRIKE.inp", "r")) {
        freopen("COI18_PAPRIKE.inp", "r", stdin);
        freopen("COI18_PAPRIKE.out", "w", stdout);
    }
    cin >> n >> k;
    for(ll i = 1; i <= n; ++ i) cin >> a[i];
    for(ll i = 2; i <= n; ++ i) {
        ll u, v; cin >> u >> v;
        g[u].push_back(v);
        g[v].push_back(u);
    }
    dfs(1, 0);
    cout << res;
    return 0;
}

/// Code by vuavisao

Compilation message

paprike.cpp: In function 'int32_t main()':
paprike.cpp:44:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   44 |         freopen("COI18_PAPRIKE.inp", "r", stdin);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
paprike.cpp:45:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   45 |         freopen("COI18_PAPRIKE.out", "w", stdout);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Subtask #1
11.0 / 11.0

# 결과 실행 시간 메모리 Grader output
1 Correct 15 ms 23824 KB Output is correct
2 Correct 15 ms 23816 KB Output is correct
3 Correct 13 ms 23820 KB Output is correct
4 Correct 14 ms 23824 KB Output is correct
5 Correct 14 ms 23812 KB Output is correct
6 Correct 16 ms 23764 KB Output is correct
7 Correct 14 ms 23824 KB Output is correct
8 Correct 14 ms 23824 KB Output is correct
9 Correct 12 ms 23760 KB Output is correct
10 Correct 12 ms 23764 KB Output is correct
11 Correct 14 ms 23788 KB Output is correct
12 Correct 14 ms 23700 KB Output is correct
13 Correct 16 ms 23788 KB Output is correct
14 Correct 14 ms 23764 KB Output is correct
15 Correct 14 ms 23764 KB Output is correct
16 Correct 14 ms 23824 KB Output is correct
17 Correct 12 ms 23764 KB Output is correct
18 Correct 14 ms 23764 KB Output is correct
19 Correct 12 ms 23820 KB Output is correct
20 Correct 17 ms 23764 KB Output is correct
21 Correct 14 ms 23720 KB Output is correct

Subtask #2
13.0 / 13.0

# 결과 실행 시간 메모리 Grader output
1 Correct 70 ms 38224 KB Output is correct
2 Correct 51 ms 38204 KB Output is correct
3 Correct 52 ms 38316 KB Output is correct
4 Correct 55 ms 38240 KB Output is correct
5 Correct 52 ms 38220 KB Output is correct
6 Correct 52 ms 38220 KB Output is correct
7 Correct 52 ms 38192 KB Output is correct
8 Correct 48 ms 37772 KB Output is correct

Subtask #3
27.0 / 27.0

# 결과 실행 시간 메모리 Grader output
1 Correct 15 ms 23824 KB Output is correct
2 Correct 15 ms 23816 KB Output is correct
3 Correct 13 ms 23820 KB Output is correct
4 Correct 14 ms 23824 KB Output is correct
5 Correct 14 ms 23812 KB Output is correct
6 Correct 16 ms 23764 KB Output is correct
7 Correct 14 ms 23824 KB Output is correct
8 Correct 14 ms 23824 KB Output is correct
9 Correct 12 ms 23760 KB Output is correct
10 Correct 12 ms 23764 KB Output is correct
11 Correct 14 ms 23788 KB Output is correct
12 Correct 14 ms 23700 KB Output is correct
13 Correct 16 ms 23788 KB Output is correct
14 Correct 14 ms 23764 KB Output is correct
15 Correct 14 ms 23764 KB Output is correct
16 Correct 14 ms 23824 KB Output is correct
17 Correct 12 ms 23764 KB Output is correct
18 Correct 14 ms 23764 KB Output is correct
19 Correct 12 ms 23820 KB Output is correct
20 Correct 17 ms 23764 KB Output is correct
21 Correct 14 ms 23720 KB Output is correct
22 Correct 14 ms 23784 KB Output is correct
23 Correct 14 ms 23836 KB Output is correct
24 Correct 17 ms 23820 KB Output is correct
25 Correct 16 ms 23836 KB Output is correct
26 Correct 13 ms 23836 KB Output is correct
27 Correct 13 ms 23816 KB Output is correct
28 Correct 14 ms 23764 KB Output is correct
29 Correct 13 ms 23776 KB Output is correct
30 Correct 13 ms 23876 KB Output is correct
31 Correct 17 ms 23836 KB Output is correct
32 Correct 16 ms 23896 KB Output is correct
33 Correct 13 ms 23812 KB Output is correct
34 Correct 14 ms 23824 KB Output is correct
35 Correct 13 ms 23776 KB Output is correct
36 Correct 14 ms 23840 KB Output is correct
37 Correct 13 ms 23764 KB Output is correct
38 Correct 14 ms 23892 KB Output is correct

Subtask #4
49.0 / 49.0

# 결과 실행 시간 메모리 Grader output
1 Correct 15 ms 23824 KB Output is correct
2 Correct 15 ms 23816 KB Output is correct
3 Correct 13 ms 23820 KB Output is correct
4 Correct 14 ms 23824 KB Output is correct
5 Correct 14 ms 23812 KB Output is correct
6 Correct 16 ms 23764 KB Output is correct
7 Correct 14 ms 23824 KB Output is correct
8 Correct 14 ms 23824 KB Output is correct
9 Correct 12 ms 23760 KB Output is correct
10 Correct 12 ms 23764 KB Output is correct
11 Correct 14 ms 23788 KB Output is correct
12 Correct 14 ms 23700 KB Output is correct
13 Correct 16 ms 23788 KB Output is correct
14 Correct 14 ms 23764 KB Output is correct
15 Correct 14 ms 23764 KB Output is correct
16 Correct 14 ms 23824 KB Output is correct
17 Correct 12 ms 23764 KB Output is correct
18 Correct 14 ms 23764 KB Output is correct
19 Correct 12 ms 23820 KB Output is correct
20 Correct 17 ms 23764 KB Output is correct
21 Correct 14 ms 23720 KB Output is correct
22 Correct 70 ms 38224 KB Output is correct
23 Correct 51 ms 38204 KB Output is correct
24 Correct 52 ms 38316 KB Output is correct
25 Correct 55 ms 38240 KB Output is correct
26 Correct 52 ms 38220 KB Output is correct
27 Correct 52 ms 38220 KB Output is correct
28 Correct 52 ms 38192 KB Output is correct
29 Correct 48 ms 37772 KB Output is correct
30 Correct 14 ms 23784 KB Output is correct
31 Correct 14 ms 23836 KB Output is correct
32 Correct 17 ms 23820 KB Output is correct
33 Correct 16 ms 23836 KB Output is correct
34 Correct 13 ms 23836 KB Output is correct
35 Correct 13 ms 23816 KB Output is correct
36 Correct 14 ms 23764 KB Output is correct
37 Correct 13 ms 23776 KB Output is correct
38 Correct 13 ms 23876 KB Output is correct
39 Correct 17 ms 23836 KB Output is correct
40 Correct 16 ms 23896 KB Output is correct
41 Correct 13 ms 23812 KB Output is correct
42 Correct 14 ms 23824 KB Output is correct
43 Correct 13 ms 23776 KB Output is correct
44 Correct 14 ms 23840 KB Output is correct
45 Correct 13 ms 23764 KB Output is correct
46 Correct 14 ms 23892 KB Output is correct
47 Correct 56 ms 33520 KB Output is correct
48 Correct 54 ms 32264 KB Output is correct
49 Correct 54 ms 31916 KB Output is correct
50 Correct 55 ms 31612 KB Output is correct
51 Correct 60 ms 31048 KB Output is correct
52 Correct 58 ms 31088 KB Output is correct
53 Correct 59 ms 30992 KB Output is correct
54 Correct 57 ms 30896 KB Output is correct
55 Correct 73 ms 30532 KB Output is correct
56 Correct 69 ms 30528 KB Output is correct
57 Correct 45 ms 30856 KB Output is correct